1.	Simplify 1 Simplify the following expression: $$ \left(-6\times4 + (-(-1))\right)2(-5)1 $$ Correct Answer $$ 230$$ or 230.000

2.	Simplify 2 Simplify the following expression: $$ \left(-2 - 5 - 2\times4\right)2\left(6 - -2\right) $$ Correct Answer $$ -240$$ or -240.000

3.	Fractions 1 Simplify the following expression: $$ \frac{-4}{3} - \frac{-1}{6} $$ Correct Answer $$ \frac{-7}{6}$$ or -1.1666666666666665

4.	Fractions 2 Simplify the following expression: $$ \frac{4}{5}\frac{5}{6} $$ Correct Answer $$ \frac{2}{3}$$ or 0.6666666666666667

5.	Significant figures 1. Write the following to 2 significant figures: 2.5071730 Correct Answer 2.5 or $$2.5\times10^{0}$$ 2. Write the following to 5 significant figures: 2099.6573 Correct Answer 2099.7 or $$2.0997\times10^{3}$$

6.	Standard Form 1. Write the following in standard form to 2 significant digits: 0.0874206 Correct Answer $$8.7\times10^{-2}$$ 2. Write the following in standard form to 3 significant digits: 0.00754888 Correct Answer $$7.55\times10^{-3}$$

7.	Significant figures 1. Write the following in preferred standard form to 3 significant digits: 0.02740 Correct Answer $$27.4\times10^{-3}$$ 2. Write the following in preferred standard form to 5 significant digits: 131016.1 Correct Answer $$131.02\times10^{3}$$

8.	Simplify 2 Simplify the following expression: $$ \frac{2\frac{-2}{-3}}{2\times4 + \frac{6}{2}} $$ Correct Answer $$ \frac{4}{33}$$ or 0.121212

9.	Simplify 1 Simplify the following expression: $$ 3\times1 + -6\times3 - {\left(4 - 3\right)}^{2} $$ Correct Answer $$ -16$$ or -16.0000

10.	Simplify 2 Simplify the following expression: $$ {\left(4 - 3\right)}^{2} + \frac{3 - 4}{-3 - -5} $$ Correct Answer $$ \frac{1}{2}$$ or 0.500000